102111207 has 32 divisors (see below), whose sum is σ = 151683840. Its totient is φ = 60587520.

The previous prime is 102111203. The next prime is 102111239. The reversal of 102111207 is 702111201.

It is not a de Polignac number, because 102111207 - 2² = 102111203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518233 + ... + 518429.

It is an arithmetic number, because the mean of its divisors is an integer number (4740120).

Almost surely, 2^102111207 is an apocalyptic number.

102111207 is a deficient number, since it is larger than the sum of its proper divisors (49572633).

102111207 is a wasteful number, since it uses less digits than its factorization.

102111207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 102111207 is about 10105.0090054388. The cubic root of 102111207 is about 467.4026136665.

Adding to 102111207 its reverse (702111201), we get a palindrome (804222408).

The spelling of 102111207 in words is "one hundred two million, one hundred eleven thousand, two hundred seven".